> Commit a82afdf (block: use the same failfast bits for bio and request)> moved BIO_RW_* bits around such that they match up with REQ_* bits.> Unfortunately, fs.h hard coded READ, WRITE, READA and SWRITE as 0, 1,> 2 and 3, and expected them to match with BIO_RW_* bits. READ/WRITE> didn't change but BIO_RW_AHEAD was moved to bit 4 instead of bit 1,> breaking READA and SWRITE.>> This patch updates READA and SWRITE such that they match the BIO_RW_*> bits again. A follow up patch will update the definitions to directly> use BIO_RW_* bits so that this kind of breakage won't happen again.>> Stable: The offending commit a82afdf was released with v2.6.32, so> this patch should be applied to all kernels since then but it must> _NOT_ be applied to kernels earlier than that.

Would someone be so kind as to remind me how this problem manifestsitself? I know I read this recently, but my memory and googling skillsare both failing me. :(